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Tue, 08 Apr 2025 08:41:14 -0700 (PDT) Received: from henry.localdomain ([111.202.148.133]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-739d97ee2ccsm10716421b3a.47.2025.04.08.08.41.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Apr 2025 08:41:14 -0700 (PDT) From: Henry Martin To: saeedm@nvidia.com, leon@kernel.org, tariqt@nvidia.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: ayal@nvidia.com, amirtz@nvidia.com, bsdhenrymartin@gmail.com, netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] net/mlx5: Fix null-ptr-deref in mlx5_create_inner_ttc_table() Date: Tue, 8 Apr 2025 23:40:57 +0800 Message-Id: <20250408154058.106668-1-bsdhenrymartin@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add NULL check for mlx5_get_flow_namespace() returns in mlx5_create_inner_ttc_table() to prevent NULL pointer dereference. Fixes: 137f3d50ad2a ("net/mlx5: Support matching on l4_type for ttc_table") Signed-off-by: Henry Martin --- V1 -> V2: Add a empty line after the return statement. drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c index eb3bd9c7f66e..ecf4b60ddd96 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/fs_ttc.c @@ -655,6 +655,9 @@ struct mlx5_ttc_table *mlx5_create_inner_ttc_table(struct mlx5_core_dev *dev, } ns = mlx5_get_flow_namespace(dev, params->ns_type); + if (!ns) + return ERR_PTR(-EOPNOTSUPP); + groups = use_l4_type ? &inner_ttc_groups[TTC_GROUPS_USE_L4_TYPE] : &inner_ttc_groups[TTC_GROUPS_DEFAULT];